F021 Modelling P-Wave Velocities from X-Ray Tomographic Images of Partially Saturated Porous Rock J. Toms* (Curtin University of Technology) T.M. Mueller (University of Karlsruhe) & B. Gurevich (Curtin University and CSIRO) SUMMARY It is well known that P wave velocities measured from drainage and imbibition experiments are often different at the same percentage fluid saturation. Specifically in drainage experiments P-wave velocities change considerably over a wide range of saturations; where as in imbibition experiments considerable changes occur only at very large saturations of the wetting fluid. These discrepancies have been attributed to differences existing between partial fluid distributions obtained from


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